Fabric cutter



Feb, 12, 1935.

N. Ross FABRIC CUTTER INVENToR. /I/afan E055,

Filed Jan. 23', 1934 A TTORNEYS.

Patente-d Feb. 12,1935 n n 1,991,121 t 1 f N UNITED STATES* PATNTOFFICET f j 991,121 f FABRIC CUTTER n n Nathanfnoss; Los` Angaescuf. n n

Application-January 23, 1934.serial'Nol'zomav M s claims. .(01. 164-76) This invention relates to a fabric cutter ofthe Fig. 5 is a sectional detail of another `modified rotary type. vform of the structure shown in Iig.` 23.

An object ofthe invention is to provide a` Referring in detail to the drawing,lthe operafabric` cutter; adapted "for use `in conjunction tive parts of the device are mounted upon a base.

with diiferentkindsoi fabric cutting machinery,v member 5 by means of a standard 6. having a.y 5

Whichjwill more effectivelyjpreventthe lint pro` footfportion 7. Saidt foot portionjis seated in a duced by the cutting operation from obtaining recess provided therefor in the upper face 4of s access to the bearings of the machine or from the ybase member 5 in order that theupper surf-Jy becoming impacted between the relatively movface `of said Vfoot portion may be made, iush*l ing parts thereof, Carrying'out this improved with the upper surface of the base4 member.y 10

feature of the invention'the rotary cutting` ele- Said foot' portion may be secured in place by any` ment is `constructed in such a manner thatthere suitable means as by the cap screws 8.`

I is notfonly aniimproved circular joint between The standard 6 together with it's body portionf` said member and the adjacenty stationary part 6b constitutes an upstanding support forthe roof the machine, but the shape of said member tary cutter member 9 which is mounted withinV 15A is such that the centrifugal force; produced by the outer twin bearing rings\.10,10`a .of 'a roller the rotation thereof acts more effectively upon bearing, said bearing being .coinpletedby means-` the lint to keep it from entering the bearings or of twin inner bearing rings 11, 11a`. and theball,

,n becoming wedged between the relatively moving bearing members .12 which are interposed *be-'A e parts of the machine; y H n tween said inner and outer bearing rings. The. 20`

Another objeetofme invention is to provides; body 6b f thestandard is recessed astshwh in. rotary cutter which is furnished with means to Fie. 2 to aid in housing the bearing Construckeeplits inner sideslightly spaced away fromthe` tion which has been Vdescribedfsfaid portion" 6b`` l adjacent stationary/,part of themachine so that" having around said recess an annular shoulder 1." wear and objectionable friction will betherefore -13 which `supports the bearing Ting 10 Saidfbear- 25 reducedtov a,ininimumy Y n f ingring being fitted. into said recessandheld f` Stillanother object oftheinventionl is tosimagainst rotation by` a 'screwV` pin 14. `Said annup plify a structure of the character to which the lar shoulder' 13 is broadfenough 'G0 Overlap `the invention pertains, to render its parts verysimgreater Daft' 0f the bearing 10 7 "p1e and easy 130 *manufactura and t0 Safeguard The `Clll'ilell' 111611111619 IlCllld'ES a, tubular. 1111111V 3Q the cutting elements from breaking or getting portion 15 said hub `being shown integral with a out of order. v n v f bevel gear 16 which surroundssaid hub at sub# The present invention relates toVan improve-yk stantially the mid-length thereof;4 ."{Describing` ment upon a structure shown in my allowedapl-v the parts as viewed `in Fig. 2 the inner bearing4 351' plication, seriai #546,456, nled `December 9,v ring 11 is fitted upon the left hand end lof thefs 1932, now"Patent No. 1,949,490, issued March` 6, hub and ,is `rendered 'nonrotatablelwith relation 1934,'for `patentr on Fabric cutting device. The thretby Ineens Of @Spline 17, While the beer# improvement hereinafter described and claimed marina 11a-is (fitted 1115011 thelght hand D013# pertains `1;() stabilizing certain parts s()` a,S t0 131011' Of `Said. hub EindV 1S held flXed` lelratOn 40Hmore effectively prevent them getting ,out 'of thereto .bymeans Of the Spline 13,' the `WO last 40/ order, as Well as to 'theimproved features above recited 'bearingvIilflgS being held Vsnugly against, enumerated.` opposite vsides of thegear 16.' The bearing ist.

` other objects, advantages and features ofthe coriipltedbymeans of the bearing rines 10,1011 `invention may hereinafter iappear. I and the'ball bearing members 12,. fourof which 4, 4Referring to the accompanying `drawing n are shown inlig.` 2. The kbearing ring l` 1()`1',`.,is}45iwhich,illustrates` what is at present deemed to. iitted Within an attctehllg` dSC 28`Sa`d`diSChaV- beV a preferred embodiment of the invention, ingfa `centrally .outwardly directed V.iiange 29V r Fig. 1` isV aface View oftheinner face of the to which said bearing ring; 10a issecuredby A composite cutter member. i meansof the spline 30.1` i v 50 Fig. `2` is a Vertical mid-section of the device,` Describing further the rotatable cutting mem- A50 parts being broken away to contract theview. 1 ber `9, said member includes a cutting `disc1'9wf Fig. 3f isla'sectionaldetailof a portion of the" having a central openingl'therethroughgwithin structures which make up the' cloth cutting disc. i which` is fitted 2a mounting member "`2`0.` 'Said nFig; 4fis" a sectional detail of a modified `form mountingl member y. has an internal n annular Q ,I

of the structure shown in Fig. 3. flange 2,1" which underlies the portion offthe 55" disc 19adjacent to said opening, said flange being bevelled at an acute angle with relation to the inner face of said disc. To the inner face of said disc may be secured an internal annular guard plate 22 which has through it a central opening the edge of which is bevelled to fit within the annular groove which is located between the bevel of said flange and the inner face of the cutting disc 19. The preferred methody of securingA4 the plate 22 to thel cutting disc 19 is by means of a plurality of small screws 23 one vof which is shown in Fig. 3. Said screws extend through countersunk openings 24 provided for them in the disc 19 and screw into a is:A furnished with an inwardly directed ledge orushoulder 2 5t'which overhangs the adjacent portionljofiV the standard body 6b,y In order to,

complete fthe space' which receives this shoulder 3o', theft/"standard `body is provided throughout its upperV portionwith a' groove 27 `the outer side of yvvhiclfiffis bevelled While its inner side extends at'.'a'right'*angley to the face of the support', t f' i ""Ih attaching"disc28 is provided with a screw threaded periphery 'whereby it isscrewed into anannulai" `Screw threaded shoulder provided thereforfin the body portion or the standard. Byj'thismeandthe entirey bearing structure is 40 l'ieldin'jits `operative position by the aid ofthe screw 31. Whichjfis Vscrewed into the left end oli the hubjl las .viewed in Fig. 2. The entire rotarycutter member is heldin place `by'means offiasecon'd yscrew32 which is screwed into the right hand end portion jof said hubj as viewed "'Ilie'lbevel gear lrnay beI driven by a driver gear lorpinion' 33 carried by the motor shaft34. In the d'rnodication of the inventionV illus tratedwin; Fig. 4 thejcutter disc' 19a is provided .*witljr an"i'nternalrb 25h 'which ltakes the place ofvjtlfie" thickened `peripheral "'portion 25` with whichjt'he guard plate 22fis provided as shown v infFig, 2',v that fis to say the cutter plate and 5gi`lardf'plate vare made in onepiece asshown in Fig: 41 lIn the latter view the thickened portion vof the cutter disc `is provided With an annularlbevel 40 which isadapted to't against the bevelled'vportion of the flange 21 of the mount-v ing member 20. d 'In Figi5 is shown another modification wherein theannular `guard plate 22 of Fig. 2 is for the Vmfost" part dispensed with, being replaced by fanannular ring`22b which is triangular in cross-section, in this View an annular space 22s is'fperr'nitted toremain betweenthe ring 22h and the annular flange Vor lip 21, this space serving.' to collect any lint or dust whichmight otherwise'ente'r the bearings.

as" yshown infFig. '2, jthe parts will'be lsecured together bymean's of -a press iitjas stated in 75,(tliefdescription iA lthe structure patentedinmy thickened bevelled peripheral portion 25N of the creeping in behind said guard plate, this plate With the exception of the splines provided to hereinbefore mentioned allowed application. The three splines shown in Fig. 2 together with the screw 14 supplement the press fit and safeguard against any play occurring as the result of long continued or hard usage of the device.

In Fig. 4 the rib 25h is furnished with an internally directed shoulder 25x. The shoulders 25h and 25x overhangthe adjacent portion of the body of the standard as shown, to safeguard against lint or. .other foreign matter. entering the bearings.

I claim: u

1. In a cloth cutter, an upstanding support having a recess in one side thereof; a bearing mounted upon said support and partly housed in saidy recess; a plate secured to said support to aid= in housing said bearing, a rotatable cutter disc having.v a, hubportion supported by said bearing, means to maintain said 'disc in its operative relation to said bearing, said disc havingk a circular central, openingtherethrough and v Said meansinciusiiig 'a mounting meriipel wniiiV occupies said central opening ofsaid cutter disc, said mounting member beingpr'ovided withi a peripheral flange the edgeflof.. whichl i'mderlies the portionV of. saiddisc, adjacentl tol sai ing and is bevelled atan.; acute.` angle" E lation to the' `inner face of said disc therebyz formingin combination with said disc agroove',

an annular` internal guardplate underlyinglsaid cutter disc andhaving itsinnerfedge bevelled toy fit upon, thebevel of said flange, andmean sto clamp saidv guard plateA betwefeiifsaid (cutting disc`and the bevelled'portion of, said mounting member.

2. In a cloth; cutter, an upstanding support having a vrecess'` in one side thereof;faibearingr mounted "upon said support and partly housed in said` recess j' a plate '.lavirig'-V *an ainiularf-routwardly projecting ange, said platebeingzsecured `to said support. with said flange directed away .from vsaid y recess to aid. infhousing said bearing', a rotatablel member supported bysaid 5 bearing; said,rotatable memberinoludin a;l ubr portion located within saidbea'ring and a ncutter disc projecting radially fro'mlsafid. hub, a v screw.,

member-,screwing into the outer er'd'of d hub to secure said' cutter member. theretd. fsaf connectionw-ith, said mountingmernber ltohclaril together all the parts, Whichrotatelwith sa cutter disc, and to lgrip the'beveledportionl V said guardrplate between saidcutter ,discand rnountingmember.Y 'i

3. In a cloth,.cutting device, a ;rollerfbe aring comprising twiirouter'rings, twin, innernrings, and `ball,' Ybearing elenients interposed .b'etjwconf.L saidfinnerrings and Saidouter'ringS, a supportV and a vplate which cooperate .to" formfafhousilngd forl said bearing, both 'the vouter.'rings of `Said bearing being mounted in 'xedrelation to'said.. support'anfd plate, a cutterfmemberhaving ahub l porti011`which extends intogand is securedto both thewinr'ier" rings of the bearing structune.v said hub l Iportion having a r screw l threaded bore dim..

therethrough, an internal screw screwing into one end `of said bore and having a headwhich engagesthe outer side of one of the inner twin bearings, and an external screw screwing into the other end of said bore, said external screw l having a head which aids in securing the cut-` hub portion which extends into and is secured to the inner ring element of the bearingstructure, said hub portion having a screw threaded bore, an internal screw screwing intoone end of said bore and having a head which engages the inner end oi `the bearing, and an external screw screwing into the other end of said bore, said external screw having a head which aids in securing said cutter member in place.

5. In combination, a cloth cutter disc adapted to be mounted upon a supporting bearing frame, a circular projecting member on said disc detachably secured thereto and spaced a predetermined distance from the `cutting edge thereof adapted to t around and overV said frame to keep foreign matter out of said bearing.

6. In acloth cutting device, a two-part or twin bearing each part of which consists of an inner ring and an outer ring with interposed antifriction elements; a housing wherein said bearing is supported, said housing having an annular shoulder which overlaps in an endwise manner the greaterportion of the outer ring of one of the parts of said two part bearing, a fastening means in said shoulder to secure such ring in fixed relationto the housing; a gear interposed between the two parts of said bearing and fixedly secured to both of its inner rings, said gear having a hub; a cutter disc; means to secure said cutter disc to said hub; and means to drive said gear.

'7. In a device of the kind described, a rotatable cutter member comprising a hub portion, an antifriction bearing assembly surrounding said hub portion, a housing for said bearing tion elements; a housing wherein said bearing is supported, said housing` having an annular shoulder which overlaps in an endwise manner the greater portion of the outer ring of one of the parts Aofsaid two part bearing, a fastening means in said shoulder to secure such ring in xed relation to the housing; means to secure the outer ring of the other part of the bearing` xedly to said housing; a` gear interposed between the two parts of said bearing and iixedly "secured to both of its inner rings, said gear having a hub; a cutter disc; means to secure said cutter disc` to said hub; and means to drive said gear.

NATHAN ROSS. 

